a spherical shell of colour surrounding and produced by a radioactive inclusion in certain minerals, manifesting in section as a ring or halo…
| 单词 | θ70754 |
| 释义 | the world > matter > chemistry > crystallography (general) > crystal (general) > crystal inclusions > [noun] > radioactive inclusion (2) pleochroic halo1894 a spherical shell of colour surrounding and produced by a radioactive inclusion in certain minerals, manifesting in section as a ring or halo… radiohalo1920 = pleochroic halo n. at pleochroic, adj. compounds. |
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